Reducing-valve.



No. 664,5l5. Pa'tehted D60. 25, |900. J. B. WABING.

REDUCING VALVE.

(Applicatim med bec. 29, 1899.)

2 Sheets-Shut l.

(No Modal.)

1N: uonms mins co. momLrmo.. wAsN No. 664,5l5. Patented nec. 25, |900.J. B. wAnma.

(Application led Dec. 29, 1899.) (No Model.) 2 Sheets-Sheet 2.'

wnNfsslis: INVENTUR UNITED STATES PATENT OFFICE.

JOHN B. WARING, OF NEWARK, NEW JERSEY, ASSIGNOR OF ONE-HALF TO HUGH L.FOX, OF NEW YORK, N. Y.

REDUCING-VALVE.

SPECIFICATION forming part of Letters Patent No. 664,515, dated December25, 1900t Application filed DeoemberZQ, 1899. Serial No. 741,977. (Nomodel.)

To a/ZZ whom t may concern:

Beit known that I, JOHN B. WARING, acitizen of the United States, and aresident of Newark, Essex county, State of New Jersey, have inventedcertain new and useful Improvements in Reducing-Valves, of which thefollowing is a specification, reference being had to the accompanyingdrawings, forming part hereof.

My invention relates to reducing-valves adapted for controlling the flowof fluid unrder pressure, and is embodied in improved means of simpleconstruction for such purpose, the means embodying'my invention beingparticularly adapted for the reduction of extremely high pressures; andmy invention has for its objects to minimize the strain on workingparts, to minimize the Wear and the effects of Wear on the working facesof the valve and other parts, Vand generally to simplify and improve theconstruction and increase the effectiveness of devices of thisdescription.

The accompanying drawings illustrate reducing-valves embodying myinvention.

Figure 1 represents a central section, transversely of the direction offlow of the Huid, of such a reducing-valve. Fig. 2 represents a sectiontaken at right angles to the plane of section in Fig. l and hencelongitudinally of the direction of Iiow of the fluid. Fig. 3 is ahorizontal section on the line 3 3 of Fig. 1. Figs. 4 and 5 arerespectivelya face view and a cross-section of the valve-seat and valve.Fig. 6 is a sectional View of a modiiied form of a reducing-valveembodying my invention.

The valve-casing 1 has at its upper end a chamber 2, comprising aplurality of cylindrical bores. A valve-seat 3, located therein, has anannular flange which engages with a shoulder between two of the saidcylindrical bores, and between said annular flange and shoulder asuitable packing-ring is provided, as shown'. Two flanged heads 4 and 5are shown as provided at the front and rear face of the casing andsecured to the casing by through-bolts, which bolts may also serve tosecure the device itself to a line of piping or elsewhere, as may bedesired. A tight joint Fig. 4.

may be effected between the-casing and the head 5, and the valve-seat issecured in place and the joint between it and the casing kept tight bythe provision of a spacing-ring 6 and two packing-rings 7 and 8. Thepacking- 55 ring 7 is preferably of some comparatively hard material,such as Babbitt metal, while the packing -ring 3 is preferably of softermetal, such as lead. The opposing faces of the valve-seat 3 and thespacing-ring 6 are 6o oppositely beveled and the packing-ring 8 arrangedbetween them. Upon drawing or clamping the head 5 toward the casing 1the softer metal of the packing-ring 8 will be caused to slightly flowand to be pressed outwardly, and a tight joint will be effected at thispoint between` the valve-seat, the casing, and one end of thespacing-ring, while a slight further pressure will make the joint tightbetween the head and the opposite end 7o of the spacing ring. A suitablepackingring is arranged, as shown, between the head 4 and the casing.

The valve-seat 3 is provided with iianged guides 9,and the slide-valve10,havinggrooves fitted to said guides, is arranged to slide and beguided thereby upon said seat. A port 11 is formed in the valve-seat forthe passage of the iiuid under pressure. The front part of this port, orthat part which is first uncov- 8o ered by the opening movement of thevalve, is preferably restricted, so that the initial opening is verysmall, and this port may be conveniently shaped, as shown in detail inThe lower portion of the casing l has a Vcylindrical bore 12, which isshown as arranged at right angles to the valve-chamber 2. A piston-head13 is tted to the bore 12 and has a limited movement therein. Apiston-rod 9o 14 is secured to the piston 13 and extends upwardlytherefrom and is'tted to slide in a cylindrical orilice extending fromthe cylindrical bore 12 into lthe valve-chamber 2. The upper end of thepiston-rod is provided with a valve-actuating arm 15, securely clampedin position transversely thereof, and one end of this arm extendsthrough the valve-seat 3 and engages the slide-valve 10. In this mannerthe piston 13, the piston-rod 14, the arm Ioo 15, and the valve are allarranged tomovetogether.

It is very essential that .the arm be secured to the piston-rod 14 insuch a manner that it shall not slip. I have found a convenient andeffective construction to be as illustrated, in which the arm 15 is inthe form of a flat pin and arranged in a corresponding slot in thepiston-rod. The front edges of this pin are beveled and arranged toengage with beveled shouldered portions of the said slot. A'clamping-bolt 16 is provided, and upon tightening the nut on theclamping-bolt the arm will not only be clamped between the side faces ofthe slot, but by reason of the beveled faces aforesaid will be crowdedup to .the rear end of the slot, and thus held very securely inposition. The end of the arm engaging the valve is preferably enlargeddiametrically and made cylindrical in form in order to engage with acylindrical recess in the valve. The slot in the piston-rod may beenlarged to this same size opposite this pointv in order that the armmay be inserted and removed, when desired, through the said slot.

The casing 1 has a second cylindrical bore 17, which may be arrangedparallel to the said bore 12. For convenience of construction andmanufacture the. said bore 17 is shown as formed in a bushing 18, suchbushing being made in two pieces and fitting a larger bore in thecasing. A piston 19 is fitted to the bore 17 and has a limited movementtherein, and a D slide-valve 20 is arranged within the upper portion ofthe bore V 17 and issecured to or engages the piston 19.

A duct or passage 21 extends from the lowpressure side (the left-handside in Fig. 2) of the main valve and extends down through the casingand through the bushing 18 and Y into the upper chamber in said bushing,and

thus maintains this upper chamber of the bushing 18 in opencommunication with the low-pressu re side of the chamber 2. Thedirection of flow of the iiuid through the chamber 2 is as shown in thedirection of the arrows in Fig. 2. v

Passages are formed between the valvechamber end of the bore 17 and thebore 12, the passage 22 extending from above the piston 13 and thepassage 23 extending from below the piston 13, and these passages'haveports at their ends which are the induction-ports for said pistonand anexhaust-passage and valveport 24 lead through an annular ope-ning aboutthe rbushing 18 to the atmosphere. The valve 2O in its movementscontrols the ports 22, 23, and 24 and admits and exhausts iiuid underpressure to and from opposite sides of the piston 12, according to itsposition. A

resistance device is arranged to hold the piston 19 upward againstnormal pressure on the low-pressure side of the main valve, but to yieldto a slight increase of pressure, such re'- sistance device being shownas a tensionsprin-g., which is arranged between a fixed support upon thecasing and a rod 26, secured tothe piston 19 and passing through asuitable stuing-box 27. The tension of the spring 26 is preferably andis here shown as adjustable, and means for such adjustment are providedin the threaded rod and nut 28y The lower ends of the cylindrical bores12 and 17 are shown as closed by covers or heads 29 and 30,respectively.

In the operation of the device fluid under high pressure-such, forinstance, as air at three thousand pounds persquare inch-is admitted tothe chamber 2 at the high-pressure side ofthe valve,( the right-handside,as shown in Fig. 2.) If the valve 10 be open, asshown, thecompressed uid will pass through the passage 11 into the low-pressureside of the chamber 2 and will pass away through the head 4 to ,anydesired point. In so passing the fluid under pressure will pass throughthe passage 2l into the Vvalve-chamber end of the bore 17 and will pressupon the pistonhead 19. When the pressure reaches such a point as toovercome the resistance of the spring 25-say a pressure of three hundredpounds-the piston 19 will be forced downwardly and the position of theD-valve 20 reversed. Fluid under pressure will now be admitted to theupper side off/the piston 13 through the passage and port 22 andexhausted from the lower side through the passages and ports 23 and 24.This will force the said piston 13 downwardly, and the piston 13 willcarry the valve 1@ with it and will close the port 11.A The valve 10will remain closed until the pressure on the low-pressure side in thechamber 2, and hence the pressure in the upper end of the chamber 17,falls below the predetermined pressure, here assumed to be three hundredpounds, and the spring 125 returns the valve 2O toward the positionshown in the drawings. Then the piston 13 will be again forced upwardlyand the valve 11 opened. By the above arran gement and construction ofparts I have produced a red ucing-valve which is adapted for use withextremely high pressures, and yet one which is simple and eifective inits action and composed of ybut few parts. One of the' great diiicultiesin handling such high pressures is to so construct the valve and seatthat the iiuid in rushing past at such high speed shall not so Wear awaythe said seat as to render it useless in a short time. By arranging avalve to move transversely of the flow of the fluid through thevalve-seat I have devised a construction by which the wearing away ofthe edge of the valve or the seat within Wide limits will not aect theoperation of the same.

I have also so constructed and arranged the parts that both Valve andseat may be easily removed and replaced when desired. y

In Fig. 6 I have shown a construction adapted for use with lowerpressures, such as the reduction of steam from two or three hundredpounds to thesqu-are inch down to the desired point. In suchconstruction I have IOO IIO

shown balanced valves 31 and 32 on one stem, which are operated by apiston corresponding to the piston 13 in the construction abovedescribed. A similar governor and controlling means are shown, exceptthat a compression-spring 33 is substituted for the tensionspring 25.This permits the end of the cylindrical bore in which is mounted thecontrolling-Valve and piston to be directly opened into the low-pressureside of the chamber 2. Such construction embodies the main principles ofmy invention and is a very simple and effective device for operating inconjunction with comparatively low pressures.

It is evident that Various modifications and structural changes may bemade in the construction shown and above particularly described withinthe purview of my invention.

What I claim, and desire to secure by Letters Patent, is

l. A reducing-valve comprising a casing having a high-pressure chamberand a lowpressure chamber and a valve-seat, a valve constructed to workagainst the valve-seat and controlling the flow of Huid from thehighpressure chamber to the low-pressure chamber, means for operatingsaid valve actuated by pressure from the low-pressure side of sai'dvalve and connected to said valve through an opening in the valve-seat,and a governing device operated under variations of pressure on the10W-pressure side of said valve and controlling the admission of fluidunder pressure from the low-pressure side of said valve to saidvalve-operating means and the exhaustion of iiuid therefrom,substantially as set forth.

2. In a reducing-valve, in combination', a casing having two chambersand a partition separating said chambers comprising a valveseat havingthe valve-port 11 therein, such valve-port having a restricted frontportion, the slide-valve l0 guided on the valve-seat and controlling theiow of fluid through such port, the rod 14 and pressure-actuated meansfor actuating the same, the arm 15 and means for clamping th'e same inthe rod 14, the slide- Valve l0 having a recess in its face and the arm15 extending through the valve-port and entering the recess in the faceof the valve, substantially as set forth.

3. A reducing-valve comprising a casing having a high-pressure chamberand a lowpressure chamber and a valve-seat, a slidevalve located so asto be pressed against the valve-seat from the high-pressure chamber, apressure-actuated device and a governing device, and a valve operated bythe governing device and adapted in its movement to admit iiuid underpressure from the low-pressure side of the valve to opposite sides ofsaid pressure actuated device, and to exhaust iiuid from opposite sidesof said pressure-actuated device, said pressure-actuated deviceincluding a rod in the low-pressure chamber and a valve-actuating armextending therefrom and extending through an opening in the valve-seatand engaging the slide-valve, substantially as set forth.

4. In a reducing-valve, in combination, a casing having a high-pressurechamber and a low-pressure chamber and a partition sepan rating saidchambers comprising a valve-seat having a valve-port 11 therein, suchvalveport having arrestricted front portion, the slide-valve 10 guidedon the Valve-seat and controlling the fiow of fluid through such port, apressure-actuated device and a governing device, a valve operated by thegoverning device and adapted in its movement to admit Witnesses:

HENRY D. WILLIAMS, HERBERT H. GIBBS.

'fluid under pressure from the low-pressure Y

